Just some sample files for RainyNite animation tool, sorted by
version.

Unless noted otherwise, these are made by caryoscelus and are
subject to CC-BY-SA license.

`v0.6/heart.ogg` and `v0.6/pulse.webm` soundtrack uses heartbeat sound by
Benboncan, which is available at
<https://freesound.org/people/Benboncan/sounds/108207/>.
